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Treasure Hunting & Metal Detecting Forum Message Boards - Detector Hunter Whites Minelab Tesoro XP > Tech Talk > Modifications, Do It Yourself & Repairs (Moderators: Eugene52, xavier, GoldDigger1950) >

Help needed to identify cap

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xavier Topic starter

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	Help needed to identify cap « on: December 06, 2010, 11:58:32 am »

Hi guys

I need help to identify this cap all that is written on it is 500 /3 and I don't have a clue as to what it's value in uF could be.

Regards Xavier

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	Re: Help needed to identify cap « Reply #1 on: December 06, 2010, 02:45:14 pm »

That's a Mil-Spec numbering system with the part number worn off above it. Sadly, even with the part number the value would not be clear. You had to look up the FSN (Federal Stock Number) to find out the value. Judging by the size and shape, if I were to venture a guess, I believe it to be 100uf, 300 volt.

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	Re: Help needed to identify cap « Reply #2 on: December 06, 2010, 03:57:31 pm »

Thanks GD I will have a look at the FNS funny that they would use a 300v cap in a 7.5v radio. The radio is from the 60's and was made in West Germany it's a Schaulb Lorenz if thats any help.

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	Re: Help needed to identify cap « Reply #3 on: December 06, 2010, 05:57:29 pm »

Hi xavier

If it is not an Capacitor chemical will be an Capacitor air and capacity becko or nano vrad .According to the production of the sixties.
best time
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	Re: Help needed to identify cap « Reply #4 on: December 07, 2010, 03:29:35 am »

Hi Japanese

I placed it on the LC meter and I got 34nf do you think that it's possible ? The reason why I want to change it can be viewed on the photo

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	Re: Help needed to identify cap « Reply #5 on: December 07, 2010, 06:51:47 am »

Hi xavair
Yes, as it predicted an Capacitor air and be value of nano or pico Farad and is used to transmit the signal from point to point and was used in valves and devices that use radio transistor germanium in the sixties and I've seen in a more than 25 years ago,Possible and be properly and landscape image is the length of time it.

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	Re: Help needed to identify cap « Reply #6 on: December 07, 2010, 10:00:12 am »

Hi Japanese

So can I still get this type of cap? or could I replace it with something els?

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	Re: Help needed to identify cap « Reply #7 on: December 07, 2010, 10:28:28 am »

Hi xavier
You can change to existing condensers Speaking Avatar will rely on in any electronic circuit there if he was in radio as a source of voltage dc +12 v will be the Voltage intensified within the limits of 63 v, But if it was in the radio using the valves and is working on AC 220 v or 110 v, the Volt intense about 400 v.
The value of condenser Asentia guess not possible to hit the value obtained by the measurement of 2 to get the Correct value.
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	Re: Help needed to identify cap « Reply #8 on: December 07, 2010, 11:22:49 am »

OK thanks Japanese

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	Re: Help needed to identify cap « Reply #9 on: December 07, 2010, 12:28:52 pm »

	Quote:	Posted by xavier
Thanks GD I will have a look at the FNS funny that they would use a 300v cap in a 7.5v radio. The radio is from the 60's and was made in West Germany it's a Schaulb Lorenz if thats any help.

The voltage rating used has no maximum when used in a circuit. Some transistor radios use 100uf, 1000v caps when they run on 2 AAA batteries. Rather than try to identify the cap, describe where it is used in the circuit. That would be far more useful.

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